In our poster we will present a computer program named ANKAphase that implements a single-distance phase retrieval algorithm by D. Paganin et al. [Weitkamp et al, Paganin]. The program is designed to process stacks of images, on which it can additionally perform flatfield normalization and subtraction of dark images. It is thus adapted for the pre-processing of tomography data sets (although it does not perform tomography reconstruction itself). An intuitive graphical user interface makes it accessible to non-experts. It is written in Java and runs on most of the common computer platforms and operating system. It can be used as a standalone application or as a plugin to the widely-used open-source image viewing/processing program ImageJ.

The recent release (ANKAphase 2.1) includes image restoration to compensate for blurring introduced by the phase-retrieval as well as using the so-called delta-beta ratio as input parameter for the phase-retrieval [ImageJ website].